机构:
Zhejiang Normal Univ, Inst Math Phys & Informat Sci, Jinhua, Zhejiang, Peoples R ChinaZhejiang Normal Univ, Inst Math Phys & Informat Sci, Jinhua, Zhejiang, Peoples R China
Hao, Jianxiu
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机构:
[1] Zhejiang Normal Univ, Inst Math Phys & Informat Sci, Jinhua, Zhejiang, Peoples R China
The Padmakar-Ivan (PI) index is a Wiener-Szeged-like topological index which reflects certain structural features of organic molecules. In this paper we study the PI indices of bicyclic graphs whose cycles do not share two or more common vertices.
机构:
Qinghai Nationalities Univ, Sch Math & Stat, Xining 810007, Peoples R ChinaQinghai Nationalities Univ, Sch Math & Stat, Xining 810007, Peoples R China
Wu, Tingzeng
Bai, Yinggang
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机构:
Qinghai Nationalities Univ, Sch Math & Stat, Xining 810007, Peoples R ChinaQinghai Nationalities Univ, Sch Math & Stat, Xining 810007, Peoples R China
Bai, Yinggang
Xu, Shoujun
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机构:
Lanzhou Univ, Sch Math & Stat, Lanzhou 730000, Peoples R ChinaQinghai Nationalities Univ, Sch Math & Stat, Xining 810007, Peoples R China